Boiler



The file of this patent contains at least one drawing/photograph executed in color. Copies of this patent with color drawing(s)/photograph(s) will be provided by the Office upon request and payment of the necessary fee.

FIG. 1 is a perspective view of a boiler showing the new design;

FIG. 2 is a front view of the boiler of FIG. 1;

FIG. 3 is a left side view of the boiler of FIG. 1;

FIG. 4 is a right side view of the boiler of FIG. 1;

FIG. 5 is a back view of the boiler of FIG. 1;

FIG. 6 is a top view of the boiler of FIG. 1; and,

FIG. 7 is a bottom view of the boiler of FIG. 1.

The broken lines shown in the drawings depict portions of the boiler that form no part of the claimed design. 

CLAIM The ornamental design for a boiler, as shown and described. 